Simple coaster with Dallas Cowboys logo etched in.
Designed coaster using 123D design then took Dallas Cowboys logo and etched it out in center.
In order to make multicolor, I watched the print in Pronterface and when it started the layer with the base of the inner etching, I paused it, changed colors and resumed. Once it completed the base of the etching and the first row above it (noted by seeing the outline of the etching), I paused again and changed back to the original color and resumed.
Updated now with additional layer so you can add in white as well.